Stuccoing and plastering machine



June 2, 1925.

. E. MORELLI sTUccomG AND 1 LASTERINGI MACHINE 2 Sheets-Sheet- 1 F d Fb. 13 1925 11e e JQ 3 one 9% .1i111e.2,1925. 1,540,415 l l E. MORELLI STUGCOING AND PLASTERING MACHINE Filed Fem 1s, 1925 v 2 sheets-sheet 2 ,4 r rop/Vins ,l

Patented .lune 2, 1925.

UNITED STATES ENRICO MORELLI, OF CINCINNATI, OHIO.v

.STUCCOING AND PLASTERING MACHINE.

Application lel February To all fro/0m t may cor/acera.'

Be it known that l, Enrico Momenti, a subject of the VKing of Italy, residing in Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Stuccoing and Plastering Machines, of which the following is a specifica-tion.

My invention relates to buildingI machines in general and particularly to machines for applying plaster or stucco or the like to the walls of buildings.

It is my object to construct for this purpose a machine which will mechanically apply plaster or stucco to the walls of a building which will not require any manual effort on the partof the operator, aside from the necessary adjustn'ient of valves, levers and starters which control the operation of the machine. It is further my purpose to provide in the delivering `orifice a mechanicallyT operated trowel to move the plaster onto the wall and to so arrange an air nozzle that. the compressed air from it will keep the trowel clean and at the same time co-operate with the trowel in forcing the plaster into the lath on the walls. It is further my object to electrically control the mechanism which operates the delivering nozzle so that when the nozzle is at the high and low limits of movement the mechanism will be stopped. Further, it is my object to provide in a supporting struct-ure for the machine a tilting device which will correct for any unevenness in the floor in front of the walls whichlhe machine is working on.

To accomplish these several purposes I have constructed a machine in accordance with the following description: Referring to the drawings forming part of this specification, Fig. 1 represents a perspective view of the assembled device with some of the co operating parts diagrammatically shown. Fig. 2 is a sectional view through the feeding nozzle. Fig. 3 is a detail view of the mechanical device which eject-s the plaster, and Fig. 4 is a detail view of the air supply device which co-operates-with the mechanical device shown in Fig. 3.

Generally indicated at 1 is a framework which in a small machine is composed of vertically extending members 2 which are bolted or riveted to horizontally extending members 3 forming a rigid structure. For use on very high walls the vertically extending members willbe provided with eX- 13, 1925. `Serial No. 8,901.

tensions, with faces aligned with the faces ofthe vertical members shown. As these extensions involve such a simple mechanical principle I have not shown vthem in the drawings in this application. The frame described which may conveniently' be called t-he vertical frame is supported atthe base by a secondary frame with bars i which are bolted to longitudinal members 5 to form another frame structure which may conveniently be called the horizontal frame. Aligned with the lower supporting members of this frame and supporting the castors 6 of the horizontal frame is another rectangular shaped structure composed of lateral bars 7 and longitudinal bars 8. These two structures are thus in the formof open crates. F rom the top members of the horizontal frame bars 9 extend diagonally to the top of the vertical frame and are secured thereto by bolts or rivets. A plurality of platforms maybe laid across the horizontal frame as the platform shown in the draw ings at 10. These platforms may be of any suitable size or strength and serve, as will be hereinafter described, to support the motors and auxiliary parts necessary for the operation of the machine.

The upright extending members of the vertical frame are in the illustration shown disposed as channel irons and extending lengthwise between the side openings of the channels a nozzle supporting platform. 11 is disposed with bars extending out beyond the faces of the channels and bent over, bearing on them, as shown at 12, so that the platform is retained within the channels slidably, with, however, perfect freedom to move upwardly and downwardly in the channels.

In the center of the channel the platform is secured with a cable 13 which passes up over a pulley 111 journaled in bearings fastened at the top of the diagonal support bars 9. A motor 15 with a cable spool 1G attached to its shaft operates the cable to raise and lower the'nozzle platform as may be readily understood.

In case there is no convenient source of air pressure where the machine is being used I have made provisions for an air supply device to fit conveniently on one of the platforms 10 which is composed of an independent motor 17 which operates a small compressor 18 which delivers compressed air to a pressure ,tank 19.v A liexible tubing from thisV pressure taiilnfthei'efore, maybe used Yto supply the plastering nozzle.

It is essential for successful results that the platform ll be adapted vt0-move vvertically up and down facing the wall to be plastered and as the horizontal frame, if'fit stood on the floor, would necessarily hold the vertical frame at right-angles to Iitself and if the floor was not level it could not -hold the vertical 'frame in other than a position at rightangles tothe position in which 'it stood. lConsequently in'oi'der to provide Vmerely preferred forms of simply constructed `parts and Ymany changes will readily occur to those skilled in this art foil proifid-ing a .different disposal of parts. YIt 4is not my purpose to claim any particular structure except in so ffar as it is necessary to adjust the machine to operate successfully as `will be hereinafter explained.

yOn the platform l1 in an extended position toward the back of the channels a small motor 24 is disposed which has an eccentric pivot and the gear teeth on the rack are 'thus moved forwardly and backwardly imparting movement to the gear wheel 26 which is journaled on the outside frame of the nozzle and imparts its motion to a gear 27 which is mounted on the trowel shaft. The plastering nozzle is composed of a supply box or tank 28 which may conveniently have a paddle mounted on a shaft 30 journaled inthe ends of the box in journals 3l. To have this paddle serve to contact vwith the plaster in the box and exert a force to push the plaster out of the box a spring 32 which may be of the kind used for screen doors is at- -tached to a pin 33 extending from the paddle shaft. The spring ,passes about the shaft several times and lthe end :may be attached to another pin 3 secured inthe side of the 'box lin a posi-tion farther around than 'the extreme limit of throw of the paddle when the box is empty.

A passage-way 35 opening from lthe supply box extends tothe nozzle compartment. Mounted longitudinally in this compartment a hoflflow shaft '36 is journaled with ythe gear 27 mounted on gift. The rack which controls the movement of th'is shaft is adapted to move vit in an are which is approximately one-third of .a circle. Fixed to the ,shaft exi the parts will be forced outwardly.

tending the :length ofthe discharging aperture-37r are two trowels 38'which form a hollow shaped compartment 39. The shaft as hasbeen noted -is hollow and a slot extends throughout its length which releases V.the air fronrthe'hollow air pipe 40 which is mounted within it. The air pipe also nas a slot 4l extendingthroughout its length within the discharging aperture. The air pipe or shaft is non-rotatively mounted so .that

4the air withinthe air pipe will only be re- Vinstead of a continuous slot.

"When the trowels passbackinto the Qpassageway 35 the slots are not in alignment and no air`blows out through 7the nozzle.

The operation of the machine is simple. The base frame is moved Ato position facing the wall to be plastered and leveled so "that 'the longitudinal frame will zbe parallel with the wall. Incase the wall is not in an exact vertical plane the adjustment ofthe base frame will also -make allowance for it. y The switches controlling the operation of the motor which raises the nozzle platform yare then turned on and the nozzle will start moving up along the face of the wall. The supply tank which Vmay be filled from a bucket or pipe from `the box or tank where 'it has been previously mixed is then put in operating condition by releasing the lock 42 which retains the paddle in inoperative lposition. The paddle pushes aga-inst the plaster ,in the supply ,box and forces it down through the outlet Vpassage into the nozzle compartment. The f rack bar moves .the trowels back into the con'ipartment .and an amount of Yplaster depending on .the size of As the trowels move toward .the ,position oftheir extreme outward throw `the air released by the Aco-operating notches is forced out from the V shaped opening .between the trowels and forces the plaster into the lath on .the wall. The nozzle platform is meanwhile started in motion. .When the nozzle has plastered an -area equal yto ythe width of the nozzle and extending from Vthe floor to the ceiling the horizontal frame is -moved to a position where the nozzle will plaster another strip alongside 'of the first. A trowel t3 and a brush 43a disposed either above or below the trowel `is attached to the frame Yof the nozzle by an adjustably mounted ,rod 44 and on this second operation of the machine covers the same area on which the first-strip of plaster was laid. Thus every completed movement of the nozzle from ,th-e 'bottom to the top of the wall not only lays one strip of plaster but it sinootlis over the adjoining preceding laid strip.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. In a device of the character specified comprising adjustable supporting framev members with a vertical frame member with a nozzle platform slidably retained thereon, means for adjusting the adjustable frame members whereby said vertical frame is aligned to operating position, means for 'retaining on the frame members a motor operating said nozzle platform, and a nozzle for applying plaster' mounted on the nozzle platform, said nozzle comprising av supply box'and a discharging orifice member, said supply box With means therein for forcing the plaster from the' boxinto the discharging orifice member, said discharging orifice member With means therein for forcing plaster onto a Wall, said Vlast mentioned means comprising in combination compressed air and mechanically moved members.

2. In a plastering and stuccoing machine, frame members adapted to support a vertically extended frame with means for tiltsaid platform with a motor for operating flat blades Within the nozzle.

3. In a plastering and stuccoing machine frame members adapted to support a vertically extended frame vvith means for tilting said first mentioned frame members whereby said vertical members may be brought in parallel alignment With a Walled surface, said vertically extended frame adapted to slidably retain a nozzle platform, said nozzle platform adapted to be moved in parallel alignment With a Walled surface throughout the length'of the vertical frame, a nozzle mounted on said Vplatform With a ino-tor for operating flat blades Within the nozzle, said fiat blades disposed on a rock shaft forming an opening between them and an air pipe disposed in non-rotative position Within said rock shaft.

4l. In a plastering and stuccoing machine frame members adapted to support a ver- Y tically extended frame with means for tilting said first mentioned frame members whereby said vertical members may be brought in parallel alignment With a Walled surface, said vertically extended frame adapted to slidably retain a nozzle platform, said nozzle platform adapted to be moved in parallel alignment with a Walled surface throughout t-he length of the vertical frame, a nozzle mounted on said platform with a motor for operating flat blades Within the nozzle, said flat blades disposed on a rock shaft forming an opening between them and an air pipe disposed in non-rotative position Within said rock shaft, with openings in the air pipe and means for selectively aligning said openings on hollovv rock shaft carrying the flat` blades in the forwardly extended position of said blades.

5, A plastering device comprising a supply box with an outlet aperture therein and means. causing the discharge of material Within the supply boxthrough the outlet aperture, anda discharging compartment connected With the supply box outlet aperture with combined mechanical and pneumatie lmeans in the discharging compartment for ejecting the material from said compartment onto a Wall. i

6. A plastering device comprising a supply box With an outlet aperture therein and means causing the discharge of material vvthiny the supply box through the outlet aperture, and a discharging compartment connected with the supply box outlet aperture with combined mechanical and pneumatic means in the discharging compartment for ejecting the material from said compartment onto a Wall, and means for moving said plastering device in a plane parallel to a Walled surface.

7. A plastering device comprising a supply box with an outlet aperture therein and means causing the discharge of material Within the supply box.v through the outlet aperture, and a discharging compartment connected With the supply box outlet aperture with combined mechanical and pneumatic means in the discharging coinpartment for ejecting the material from said compartment onto a Wall, and means for moving said plastering device in a plane parallel t0 a Walled surface, With auxiliary means for smoothing over a plastered surface adjacent the area traversed by the nozzle.

ENRICO MORELLI. 

